15" Planer blade height & bevel question

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Forum topic by Holbs posted 05-02-2015 11:47 PM 627 views 0 times favorited 4 replies Add to Favorites Watch
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1346 posts in 1447 days

05-02-2015 11:47 PM

I am doing the 3 knife blade installation and setting this weekend on my Jet 15” planer. Have to do this with dial indicators (did the same with my 6” jointer knives so no big deal). But,when I try to find out the height of the knives for this Jet machine, it always falls back to ‘use the jet gauge’. Well, I do not have one. Somewhere, someone mentions 1/16” above cutterhead, and that is what I’ll set out to do.
Next question: bevel. My sharpening service set to standard 15” planer bevel. My foolishness and inexperience to actually ask what degree the bevel was set at. Jet HSS blades are set at 40degree with a 42degree micro bevel (as I just now found out). I only have the default bevel, not the micro bevel. Unsure how this will affect cuts.

Basically, I’m asking for 15” planer blades: what is the height above the cutter head on a Jet? And is the micro bevel a must ?

-- Yes, my profile picture is of a Carpenter Bee! The name is derived from the Ancient Greek "wood-cutter"

4 replies so far

View SASmith               's profile


1850 posts in 2405 days

#1 posted 05-03-2015 12:29 AM

I have a 3HP 15” jet.
I don’t use a micro bevel.
I set the projection at .055 using 2 dial indicators.
I sharpen my blades at 45 degrees.

-- Scott Smith, Southern Illinois

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1346 posts in 1447 days

#2 posted 05-03-2015 12:33 AM

thanks scott. I was fretting last couple hours about these 2 issues, because I am to that point of installing blades.
0.55 it is. unsure of the primary bevel but will run with it for time being. Probably will purchase 2nd set from or somewhere. And will talk to a Jet representative this week about the bevels

-- Yes, my profile picture is of a Carpenter Bee! The name is derived from the Ancient Greek "wood-cutter"

View Aj2's profile


624 posts in 1216 days

#3 posted 05-03-2015 03:48 AM

Holbs I wouldnt worry too much about the bevel angle 40 degrees is fine.Adding two or five more may not make any difference,depending on what species of wood your cutting.
The hook angle of the head is what matters the most and it’s been determined by who ever.and it’s not something you can change.20 degree is the most popler for jointers and planers.Aj

View TheFridge's profile


5672 posts in 904 days

#4 posted 05-03-2015 03:52 AM

Not gonna matter because it cuts with the back of the blade.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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